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Test your basic knowledge |
Dairy Cattle And Reproduction
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Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
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study here
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Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)
1. more cost effective - 2. powdered milk is in excess production
#1 cost in production
estrous
mare gestation
2. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.
eminal vesicles
oviducts
Grading choice
sow estrus cycle
3. (LH) causes female's egg to break (her period)
cow gestation
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
Lutinizing Hormone in females
sow ovulation
4. 114 days
femininity of a heifer
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
sow gestation
Dairy Cattle milking schedule
5. Allows extension of penis without fibro-elastic penis
testosterone
sigmoid flexure
Dairy Cattle Lactation (standard)
behavioral signs of estrus
6. Why does estrus happen before ovulation?
retractor muscles
penis sizes vs delivering methods
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
mare gestation
7. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
ewe estrus
Jersey Cow
1. more cost effective - 2. powdered milk is in excess production
stag
8. (FSH) causes egg to mature in females
Follical Stimulating in females
age and castration
sow estrus
semen evaluation (BSE)
9. Produce testosterone. located between the seminiferous tubules
Dairy Cattle Gestation
leydid or interstitial cells
mare estrus
penis and prepuce observation (BSE)
10. Why does estrus happen before ovulation?
sow estrus
seminiferous tubules
Dairy calves are removed from cow at birth to...
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
11. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
things to check for in a breeding soundness exam (BSE)
4 major reasons for culling dairy cows
mare gestation
penis and prepuce observation (BSE)
12. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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13. 24 hours before end of estrus cycle
mare ovulation
age and castration
cow gestation
purpose of Breeding Soundness Exam (BSE) for males
14. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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15. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)
feeding a high producing dairy cow
cowper's gland
humans: stress level vs sperm
pelvis
16. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm
ewe gestation
scrotal circumference (BSE)
mare ovulation
mare estrus cycle
17. When are steers and heifers weaned from bottle feeding?
vagina
6-8 weeks
4 major reasons for culling dairy cows
butterfat
18. Front feet and head first. (except for hogs and dogs)
scrotum
dry matter and water
normal presentation of the fetus
Reasons for gestation length being affected
19. Check feet and legs - look for masculine traits in build such as crest and muscling
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
cryptorchid
4 major reasons for culling dairy cows
visual evaluation (BSE)
20. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated
burdizzo
elastrator
ewe estrus cycle
sow estrus cycle
21. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat
age and castration
epididymis: definition - 3 parts - 4 functions
elastrator
functions of progestrone
22. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
eminal vesicles
dairy cattle pregnancy check
Size of cow in relation to the amount of milk produced
23. Prevent the cow from getting an infection from the calve
leydid or interstitial cells
effects of estrogen
scrotum
Dairy calves are removed from cow at birth to...
24. ~305 days (altough often longer due to breeding difficulties)
Dairy Cattle Lactation (standard)
mare gestation
normal presentation of the fetus
age and castration
25. 19-23 (21) days
van deferens
sow estrus cycle
castration
~1 month
26. Failure to have one testis (gonad) to descend
Sperm growth rate
monestrous
monorchid
penis sizes vs delivering methods
27. Implies the amount of estrogen production
feeding a high producing dairy cow
Dairy calves are removed from cow at birth to...
Hormones from both the fetus and the mom.
femininity of a heifer
28. (LH) stimulates the Leydig cells to produce testosterone
Lutinizing Hormone in males
seasonally polyestrous
normal presentation of the fetus
kidney stones also called ________ ___________ can develop in the sigmoid flexure
29. 1-2 days
prostate gland
hypothalamus and pituitary gland
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
ewe estrus
30. 45-60 days after breeding; re-breed as required
estrous
sigmoid flexure
dairy cattle pregnancy check
things to check for in a breeding soundness exam (BSE)
31. 283 days
organs used in spermatogenesis
cow gestation
testis (gonads)
feeding a high producing dairy cow
32. Not under a timeline - cow can not be sold as steak
ewe's estrous cycle
Jersey Cow
Grading choice
stag
33. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
humans: stress level vs sperm
ewe gestation
sperm cell
butterfat
34. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
things to check for in a breeding soundness exam (BSE)
mare estrus cycle
castration
monestrous
35. Sperm is produced here
feeding a high producing dairy cow
seminiferous tubules
scrotum
colostrum
36. (male) pushes the testes upward toward the body for warmth or protection
epididymis: definition - 3 parts - 4 functions
dartos muscle
ewe estrus
mastitis
37. 336 days
4 major reasons for culling dairy cows
vulva
mare gestation
ewe estrus
38. Look for infection - split - and rupture of the penis
scrotum
penis and prepuce observation (BSE)
cow ovulation
accessory sex glands
39. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
seminiferous tubules
femininity of a heifer
growth lost from castration methods (knife & band)
Grading choice
40. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.
oviducts
ewe's estrous cycle
Sperm survival specs
castration
41. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
polyestrous
cervix
hormones
sow estrus cycle
42. 1-3 days
organs used in spermatogenesis
things to check for in a breeding soundness exam (BSE)
colostrum
sow estrus
43. 30 hours after estrus begins
sow estrus
leydid or interstitial cells
cow ovulation
sow estrus cycle
44. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co
mare gestation
ewe ovulation
effects of BST
Dairy Cattle milking schedule
45. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
Lutinizing Hormone in males
dry matter and water
retractor muscles
Blood
46. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)
rectal palpation (BSE)
seminiferous tubules
prostate gland
monorchid
47. What makes the milk flow through the mammary glands?
behavioral signs of estrus
monestrous
purpose of Breeding Soundness Exam (BSE) for males
Blood
48. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
functions of progestrone
seasonally polyestrous
uterus
penis sizes vs delivering methods
49. 336 days
seasonally polyestrous
mare gestation
monestrous
Reasons for gestation length being affected
50. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)
ewe's estrous cycle
4 major reasons for culling dairy cows
feeding a high producing dairy cow
Dairy Cattle Lactation (standard)
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